Locking bolt for doors



Ab r w. s. TORRENCE 1,707,694

LOCKING BOLT FOR DOORS Filed June 22, 1928 P k A m 22 M Z/ 0" k? y l s 23 Q 17111671101 n FY19? a/y p," VII 01/?1766 Patented Apr. 2, 1929.

UNITED STATES WALTER S. TORBENCE, OF NEW YORK, N. Y.

LOCKING BOLT FOR DOORS.

Application filed June 22,

bolt into a position permitting the opening of the door. 7

A further object of the invention is to provide a sliding bolt for doors operable for movement into door releasing position through a key inserted in the lock at the outside of the door and provided with independent manually operable means at the inner side of the door for moving the bolt into position for opening or closing the door.

A still further object of the invention is to provide a sectional locking bolt of this character which extends in a horizontal position entirely across the door at the inner side thereof and providing a pivotal connection for the sections of the bolt and arranging the pivot points for movement into a position adjacent the hinged edge of the door when the bolt is moved into door releasing position so as to permit .the swinging of the door in the usual manner. 7

An additional object is to provide a device of this character of simple and practical construction, which is strong and durable, efficient and reliable in performance, relatively inexpensive to manufacture and install in operative position and otherwise well adapted to the purpose for which the same is intended.

Other objects and advantages reside in the special construction, combination and arrangement of the various elements forming the invention as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which:

In the drawings:

Figure 1 is a view in elevation showing the device positioned at the inside of a door and shown in locked position,

Figure 2 is a horizontal sectional view through the door taken along a line immediately above the locking bolt and Figure 3 is a fragmentary vertical sectional view through the door, and the lock housing.

Referring now to the drawing in detail, wherein for the purpose of illustration I have disclosed a preferred embodiment of my invention, the numeral 5 designates a 1928. Serial No. 287,454.

door of conventional construction and mount- I ed along one vertical edge by hinges 6 upon a door frame 7.

An opening 8 is formed in the door adjacent the swinging edge thereof and within which is fitted a lock housing 9 having an escutcheon plate 10 formed thereon and positioned at the outside of the door and within which plate is formed an opening for receiving a key 11.

The key is adapted to operate in a rotatably mounted lock member 12 positioned in the housing, said member having a shaft 12' extending from the inner end and protruding from the door at the inner side thereof.

To the inner surface of the door is attached a housing 13 through which the shaft extension 12 is inserted, the portion of the shaft extension within the housing being provided with a spur gear 14 engaging a rack 15 formed along the upper edge of a bar or door bolt 16.

The bolt 16 is disposed horizontally respect to the door and is slidably disposed in a groove 17 formed in the housing, the bolt being of sufiicient length to extend entirely across the door-and overlappingthe vertical side edges thereof. At each side of the door frame 7 is arranged a guide bracket 18 through which the opposite ends of the bolt are slidably inserted.

Thus when the bolt is extended across the inner side of the door with its opposite ends disposed within the brackets 18 and each side of the frame, the door is secured against opening movement. v l

The bolt 16 is constructed of a pair of sections of unequal length, the shorter section 19 being disposed at the end of the bolt adjacent the hinged edge of the door, the adjacent end of the section being connected by a pivot pin 20 disposed vertically so as to permit horizonwith tal swinging movement of one of the sections of the bolt relative to the other.

A guide bracket 20 is also secured to the inner side of the door through which the bolt 16 is slidably inserted, the bracket being positioned so that the pivoted ends of the sections of the bolt are disposed within the bracket when the bolt is arranged in door securing position as clearly illustrated in Figure 1 of the drawing, whereby to prevent movement of the sections on the pivot.

The position at which the sections of the bolt are pivoted is further regulated so that upon the sliding of the bolt 16 through the operation of the key 11 and gear and rack engagement 14 and 15 respectively, the pivotal connection between the sections ot' the bolt will be moved sufliciently to occupy a position in vertical alinement with the hinged edge of the door and thus prevent interference with the opening movement of the door by the bolt. The lock mechanism provided in the present embodiment of the invention is adapted to operate the bolt only from the outside of the door in order to arrange for the movement of the bolt into door releasing position from the inner sides of the door a sleeve 22 is formed int-egrally'with the gear 14, the sleeve extending outwardly of the housing 13 with its outer end formed into a head 23 which constitutes a push button by means of which the gear 14 maybe pushed inwardly of the housing out of engagement with the rack 15.

Acoil spring 24 is arranged onthe shaft extension 12 for engaging the gear 14 and normally urging the same outwardly with respect to the shaft extension for engagement with the rack.

If desired a similar spring 25 may be positioned uponthe sleeve 22 and con'ipressed between the outer face of the housing and the head 23 of the sleeve to assist the spring 24: in also normally retaining the gear in engaged position with the rack.

A slotted opening 26 is formed in the lions ing 13 through which a handle 27 extends having one end connected with the bolt 16 whereby to permit a person at the inside of the door to slide the bolt out of door securing posit-ion upon the pressing of the head 28 inwardly as to release the gear from the rack.

It will be apparent from the foregoing that the bolt cannot be forced by persons at the outside of the door or otherwise moved into my invention, what slidably mounted at the inside of the door with its opposite one disposed in overlapping relation with the opposite edges of the door and with the sections of the bolt pivotally connected for horizotnal swinging movement, said pivotal connection'being arranged for movement into a horizontal position at the hinged edge of the door upon the movement of the bolt into door releasing position, a key actuated locking member rotatably mounted in the doorand having a shaft extension formed at its inner end and protruding from the inner side of the door, a gear slidably mount d on said shaft extension and adapted for rotation with the locking member, said bolt having rack formed thereon engageable with the gear, and means disposed inwardly oi the door for moving the gear out of rack engaging position permit-ting the actuation of the bolt independent of said locking member, said means comprising a sleeve slidably mounted on said shaft extension and connected at one end with said gear, a head formed at the outer end'of the sleeve, spring means engageable with the gear whereby to normally retain the same in engaged position and an operating handle formed on said bolt.

In testimony whereof I dill my signature.

W'ALTER'S. TORRENCE. 

